The SummaryTyphoon Etau (international code 200909) is a 2009 Northwest Pacific typhoon; peak intensity Severe Tropical Storm, max wind 25m/s, minimum central pressure 990hPa, not in China Landfall, 2009-08-12 was numbered off, recorded 12 track points.
Typhoon Etau, international code 200909, international name ETAU, 2009 Northwest Pacific typhoon. Formed: 2009-08-09 20:00:00, ended: 2009-08-12 14:00:00. Peak intensity: Severe Tropical Storm, minimum central pressure: 990 hPa, max wind: 25m/s.
Typhoon Etau at 2009-08-09 20:00:00 at 28.2°N, 135.2°E over the Northwest Pacific; initial intensity: Tropical Storm.
It peaked at Severe Tropical Storm intensity with max winds of 25 m/s (~90 km/h) and a minimum central pressure of 990hPa, recorded at 2009-08-11 20:00:00.
2009-08-12 14:00:00 After, Typhoon Etau gradually weakened and was numbered off on 2009-08-12 14:00:00 was numbered off; its lifecycle recorded 12 track points.
Typhoon Etau (200909)'s life history is short, from formed to dispersed only about 66h. Its path overall shows significant 'first N after E' turning characteristics. Initial phase (August 9, 20 am to 10 pm 14) , system position at lat 28.2° to 31.0° N, 134.7° to 135.1° ocean area, main toward N, latitude rapidly rising about 2.8 degrees, length variation is small, showed by the influence of guided airflow is relatively single.
Moving direction gradually shifted to NE toward, and accompanied by a noticeable increase in toward E. Especially during the August 11 08 to 14 hours, the length jumped rapidly from 138.5°E to 140.5°E, indicating that the system accelerated toward E deviation.
在Intensity变化方面, Etau经历了“维持—缓慢增强—巅峰—迅速减弱”的过程. formed初期至8月10日14时, Pressure从996hPa缓慢降至992hPa, max wind 维持在18m/s. 8月10日20时至11日14时, intensity 稳步提升, 气压进一步降至990hPa, wind speed增至20m/s.
The system's peak state appeared on August 11 at 20 o'clock, at which time Pressure reached a minimum of 990hPa, max wind rose to 25m/s, classified as Severe Tropical Storm. It is worth noting that the peak stateined Time extremely short, only 6h after August 12 at 02 o'clock, although wind speed remained at 25m/s, but Pressure has returned to 995hPa, predicting the structure begins to loose.
Compared to History, 2009’s Etau’s Intensity was weak at 2003’s 10th Typhoon Etau (top Super Typhoon, minimum pressure 933hPa), but with 2015’s 18th Typhoon Etau (top Tropical Storm, minimum pressure 990hPa) was flat at the lowest air pressure.
| Time | The latitude | During | Intensity | Wind (m/s) | Pressure (hPa) | Moving toward |
|---|---|---|---|---|---|---|
| 2009-08-09 20:00:00 | 28.2°N | 135.2°E | Tropical Storm | 18 | 996 | N |
| 2009-08-10 02:00:00 | 29.3°N | 134.7°E | Tropical Storm | 18 | 996 | - |
| 2009-08-10 08:00:00 | 30°N | 134.7°E | Tropical Storm | 18 | 994 | N |
| 2009-08-10 14:00:00 | 31°N | 135.1°E | Tropical Storm | 18 | 992 | NNE |
| 2009-08-10 20:00:00 | 31.9°N | 135.9°E | Tropical Storm | 20 | 992 | NE |
| 2009-08-11 02:00:00 | 32.3°N | 136.9°E | Tropical Storm | 20 | 992 | - |
| 2009-08-11 08:00:00 | 32.8°N | 138.5°E | Tropical Storm | 20 | 992 | NEE |
| 2009-08-11 14:00:00 | 33.5°N | 140.5°E | Tropical Storm | 20 | 990 | E |
| 2009-08-11 20:00:00 | 33.5°N | 142.6°E | Severe Tropical Storm | 25 | 990 | - |
| 2009-08-12 02:00:00 | 32.7°N | 145.6°E | Severe Tropical Storm | 25 | 995 | - |
| 2009-08-12 08:00:00 | 32.3°N | 147.6°E | Tropical Storm | 18 | 995 | E |
| 2009-08-12 14:00:00 | 32.6°N | 150°E | Tropical Storm | 18 | 995 | NE |
The international code for Typhoon Etau is 200909, which is the 9th Typhoon of 2009, the international name ETAU.
Typhoon Etau peak intensity is Severe Tropical Storm, max wind 25m/s, minimum central pressure 990 hPa.
According to records, the Typhoon Etau is not in our coastal landfall.
TyphoonSays (taifengshuo.com) provides typhoon Etau's Track history map, multinational meteorological agency Forecast comparison, wind range with IntensityTrend, page address: https://taifengshuo.com/typhoon/200909.
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